Table 3.

Basal parameters of the human and mouse atrial preparations (n = 6–15)

Human right atrium	37 °C	23 °C	42 °C
basal tension (mN)	0.87 ± 0.25	0.36 ± 0.13	0.72 ± 0.20
basal time-to-peak tension (ms)	66.2 ± 11.5	127 ± 19.8*	47.1 ± 5.36
basal relaxation time (ms)	145 ± 14.5	311 ± 26.9*	125 ± 10.5
Mouse left atrium
basal tension (mN)	2.18 ± 0.30	0.94 ± 0.28*	1.31 ± 0.21*
basal time-to-peak tension (ms)	20.4 ± 0.22	38.4 ± 0.82*	18.5 ± 0.16*
basal relaxation time (ms)	23.1 ± 0.78	63.0 ± 3.04*	19.7 ± 0.80*
Mouse right atrium
basal tension (mN)	0.96 ± 0.13	0.67 ± 0.11*	0.67 ± 0.08*
basal time-to-peak tension (ms)	20.4 ± 0.40	36.8 ± 0.64*	21.1 ± 0.72
basal relaxation time (ms)	23.1 ± 0.54	80.6 ± 3.57*	22.0 ± 0.80
basal beating rate (bpm)	454 ± 22.2	120 ± 10.4*	534 ± 3 2.1*

^*p < 0.05 vs. 37 °C